Ligthing a strike anywhere match with a bullet:
Impressive they got it to work (though I suspect it took more than "nine tries" like Jamie said to get it to work) I suspect though that striking the match on it's side, for greater surface-area contact, would've gotten better results. Oh, and I personally hate Safety Matches.
Shrek Ear Candle Wax:
Ew. Of all the things to test. The flamabilty of ear wax was pretty impressive I would've never guessed that. I always figured ear wax was "wax" in name only and not in any chemical sense. The scrounging of ear wax? Oy. Interesting they did it, I had always heard ear wax serves a purpose and removing it isn't condusive to good ear health.
And, man, it seems like they had a rough time processing the stuff into candles and really tested the limits of the gag reflexes. But, yeah, it figures it'd come down to compositon of the wax on whether it worked or not. But Mr. Pedantic in me will mention that we don't know how ogre wax is made up.
Hand in Water:
Like Jamie this is one I've always wondered about too. The water-alarm device thing was nifty. Adam has sleep apnea? Yikes! And, heh, he cuddles with a pillow like I do!
Not surprising it didn't work, bladder control is a miraculous thing. Though, I'd argue trying it on childred -with weaker bladder control- could've netted different results.
Gorn Cannon:
Grant's communicator looks like one of last year's Hallmark ornaments.
The re-enactment, again, was great. Better than showing the old clip.
The assumption Kirk knew the rations was good asumption to make, otherwise they would've spent a LOT of time trying to figure out what Kirk mixed together. But going through the different combinations/mixtures proves a flaw in the "myth." Grant and Tori do this stuff for a living and they couldn't get the best result on the first try. I guess we can assume that somewhere in Starfleet academy Kirk was taught how to precisely make powder from scratch.
So the bamboo failed. Well, maybe the bamboo on the planet was stronger?

We could play this game all night. It was fun to see them test it and, it did hit the Gorn!
Hand in molten lead:
Not with molten lead, but in other very hot materials I've seen this done and have actualy done it. Having a wet hand, but not dripping, adds as a real nice barrier to prevent things from burning you. Fun to do.
When Jamie first "dipped" the sausage he did it way too slow. It's supposed to be real quick.
Overall, this was a fun episode.